expand private subclasses into separate files

git-svn-id: http://skia.googlecode.com/svn/trunk@4835 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 37 insertions, 0 deletions

diff --git a/src/image/SkSurface_Base.h b/src/image/SkSurface_Base.h
new file mode 100644
index 0000000000..bb6de961b0
--- /dev/null
+++ b/src/image/SkSurface_Base.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSurface_Base_DEFINED
+#define SkSurface_Base_DEFINED
+
+#include "SkSurface.h"
+
+class SkSurface_Base : public SkSurface {
+public:
+    SkSurface_Base(int width, int height) : INHERITED(width, height) {}
+
+    virtual SkCanvas* onNewCanvas() = 0;
+    virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) = 0;
+    virtual SkImage* onNewImageShapshot() = 0;
+    
+    /**
+     *  Default implementation:
+     *
+     *  image = this->newImageSnapshot();
+     *  if (image) {
+     *      image->draw(canvas, ...);
+     *      image->unref();
+     *  }
+     */
+    virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*);
+
+private:
+    typedef SkSurface INHERITED;
+};
+
+#endif
+